feat: U4 ciphertext page dump tool

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- utrw/debug.c: utrw_debug_dump_page(slot,page,offset) — kernel debug-privileged dump of 64B ciphertext + decrypted plaintext hex to serial (PCKC key derive, no capability path)
- selftest demo: dump at offset 128 shows plaintext 'deshab utsm sealed memory selftest' vs unrelated ciphertext; SELFTEST PASS (.build_tmp/qemu_serial_u4dump.log)

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Linehu

2026-10-02 14:40:26 +08:00

parent 42fc06439c

commit 7925c09677

12 changed files with 123 additions and 3 deletions

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SYSTEM/boot/utsm.elf

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